function add_fav(){
	var ver = navigator.appVersion.charAt (0);
	if (navigator.appName == "Microsoft Internet Explorer" && ver >= 4) {
		window.external.AddFavorite('http://www.tdsc.co.jp/kanyuken/', '電話加入権[電話取付・買取]');
	}
	else{
		alert("Sorry IE4  Only");
	}
}
function back_page(){
	history.back();
	return false;
}
function houhanhou(){
	var lm
	lm = window.open("houhanhou.htm", "houhanhou" , "toolbar=no,scrollbars=yes,location=no,directories=no,width=615,height=500")
	return false
}
function data_secu(){
	var lm
	lm = window.open("data_secu.htm", "data_secu" , "toolbar=no,scrollbars=yes,location=no,directories=no,width=620,height=530")
	return false
}